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Article Dans Une Revue Filtration Année : 2005

SPECTRAL DYNAMIC EFFICIENCY OF GLASS MICROFIBRE FILTERS IN LIQUID AEROSOL FILTRATION

Résumé

Air quality has become an important occupational health, environmental, political and scientific topic over the past few decades. Liquid aerosols can be an important part of air pollution. For example, mists of metalworking fluids used in the mechanical industries can constitute a real health hazard. Filtration is most often the method of choice to rid the atmosphere of these liquid aerosols. Classical filtration theories that calculate the efficiency and pressure drop of new filters are available in the literature [1, 2], but these theories can only be applied to new filters or during the very early stages of the filtration [3]. Even after a short period the amount of liquid accumulated on a fibrous filter, which is influenced by drainage, re-entrainment and evaporation, affects the efficiency. Therefore filter efficiency largely depends on filter characteristics (e.g. fibre material, fibre diameter, packing density, thickness), filtration duration and velocity, and particle size distribution. Several publications deal with filter efficiency variations with particle size distribution [4-9], filtration time [6, 9-11] and filtration velocity [7, 8, 11].
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Dates et versions

hal-00069059 , version 1 (16-05-2006)

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  • HAL Id : hal-00069059 , version 1

Citer

T. Frising, D. Thomas, P. Contal, D. Bemer, D. Leclerc. SPECTRAL DYNAMIC EFFICIENCY OF GLASS MICROFIBRE FILTERS IN LIQUID AEROSOL FILTRATION. Filtration, 2005, 5 (1), pp.43-48. ⟨hal-00069059⟩

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